Add Super Nerd skin by julito (CC BY-SA 3.0)...

Source: http://minetest.fensta.bplaced.net/#id=1030

mods/antum/skins/init.lua

@@ -45,6 +45,7 @@ local skins = {
 	{"skeleton_disguise.png", "Skeleton Disguise",},
 	{"skin_minecraft_repris.png", "Minecraft Repris",},
 	{"Space_Sam.png", "Sam (space)",},
+	{"Super_Nerd.png", "Super Nerd",},
 	{"SuperSam.png", "Sam (super)",},
 	{"wheat_farmer.png", "Wheat Farmer",},
 	{"villiantest_III.png", "VillianTest",},

mods/antum/skins/textures/SOURCES.md

@@ -25,6 +25,7 @@
 - [skeleton_disguise.png](http://minetest.fensta.bplaced.net/#id=1991) by TenPlus1 (CC BY-SA)
 - [skin_minecraft_repris.png](http://minetest.fensta.bplaced.net/#id=856) by Sporax (CC BY-SA)
 - [Space_Sam.png](http://minetest.fensta.bplaced.net/#id=37) by philipbenr (CC BY-SA)
+- [Super_Nerd.png](http://minetest.fensta.bplaced.net/#id=1030) by julito (CC BY-SA 3.0)
 - [SuperSam.png](http://minetest.fensta.bplaced.net/#id=155) by AMMOnym (CC BY-SA 3.0)
 - [villiantest_III.png](http://minetest.fensta.bplaced.net/#id=109) by marshrover (CC BY-SA 3.0)
 - [wheat_farmer.png](http://minetest.fensta.bplaced.net/#id=1974) by Addi (CC BY-SA 4.0)